Tropical Storm Helene formed quickly after moving off the African coast Friday.
"While it's still too early to know the storm's path, we know we have to be prepared", Cooper said in a news release. The storm was centered about 835 miles (1340 kilometers) southeast of Bermuda and moving west at 7 mph (11 kph).
The strengthening of Florence is due to a few different factors.
Wherever Florence ends up going, we will feel some of the effects along the coast and those effects will begin this weekend with rough surf, large swells, and a risk of rip currents.
As of the 11 a.m. Saturday advisory, Florence had maximum sustained winds of 65 miles per hour and was moving to the west at 7 miles per hour.
The peak of hurricane season in the Atlantic Ocean is September 10, and right on schedule, the Atlantic Basin has come to life with numerous areas of concern.
Friday afternoon, Florence had been downgraded to a tropical storm, but strengthening is expected over the weekend.
As of early September, the 2018 hurricane season had been calm compared to the frenzy of 2017, in which three major storms - Harvey, Irma, and Maria - wrought havoc in the Caribbean and on the USA mainland.More news: Trump riled after unions head accuses him of hurting USA workers
"The models are ... really starting to favor a landfall around the Carolinas", though states to the north should watch as well, CNN meteorologist Allison Chinchar said Saturday morning.
It may take the cyclone some time to gather itself once the shear abates, but once it becomes vertically stacked again, the intensity is likely to increase significantly..
More and more, Florence is looking like a storm that may give the US East Coast problems as a potentially major hurricane next week.
Florence is still far away, but we're keeping a close eye on this storm.
Forecasters expect Helene to bring tropical storm conditions to parts of the Cabo Verde Islands on Saturday night and officials warn heavy rainfall on the islands could produce life-threatening flash floods.
All the while, sea surface temperatures will be gradually increasing to between 28 to 29C (82.4 to 84.2F), and perhaps more importantly, oceanic heat content values will double in three to four days, the NHC site added.
Forecasters said it was too soon to tell where the storm would go.